Silva, Adriano Caliman Ferreira daAlencar, Mery Ingrid Guimarães de2017-08-042021-10-062017-08-042021-10-062011-06-28ALENCAR, Mery Ingrid Guimarães de. Sinergismo entre detritos florais e foliares sobre o processo de decomposição em ecossistemas terrestre e aquático. 2017. 44 f. Trabalho de Conclusão de Curso (Graduação em Ecologia) - Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal-RN, 2017.https://repositorio.ufrn.br/handle/123456789/43363The priming effect (PE) is non-additive organic matter decomposition with interactions between label (LOM) and refractory organic matter (ROM), mediated for action of the microbial biomass. The PE has been widely demonstrated in terrestrial ecosystems through the interactions differ between organic compounds with different susceptibilities to biological degradation. However, no study evaluated, if and how the interaction among floral (LOM) and foliar (ROM) debris affect the occurrence, direction e symmetry of the PE, and if these properties are equally important in terrestrial and aquatic ecosystems. Moreover, little is known about how the relative proportion between LOM and ROM affect the properties of PE. Our objective is to test how the relative proportion among LOM and ROM affect the occurrence, magnitude and direction of the phenomena PE in terrestrial and aquatic ecosystems. Our results show the occurrence and direction of the PE were consistent in both ecosystems in general the mix of floral e foliar debris encouraged reciprocally the decomposition in comparison to their monocultures. However, the magnitude of PE was stronger in terrestrial environment than aquatic one and only varied according to proportion in the mix between floral and foliar debris in the terrestrial ecosystem. The floral debris presented nutrients concentrations like N. P e K and moisture retention capacity superior to leaf debris. This fact suggests that the greatest magnitude and variability of the PE in relation of the mixing ratio in terrestrial ecosystems have been originated both from interactions that have repercussions on the greater availability of resources and also on the improvement of the abiotic conditions of the humidity for the microbial community, since moisture is not limiting to decomposition in the aquatic environment. Although, the leaching is more pronounced in the aquatic environmental and results in the loss of mass of the detritus by transfer of dissolved organic matter for the environment, may have resulted in an underestimate of the PE in relation to the terrestrial system. Our study demonstrated for the first time the occurrence of the PE among floral and foliar debris. This fact may be an initial point to demonstrate the biogeochemical importance of species that present high reproductive investment in floral biomass and that, depending on the abundance and distribution of such populations, the interaction between flora e foliar debris can have important effects on the recycling of nutrients and carbon on both small and large spatial scales.openAccessPriming effectTabebuia aureaEfeito não aditivobachelorThesis